diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
new file mode 100644
index 00000000000..098f92221ba
--- /dev/null
+++ b/.github/workflows/ci-build.yml
@@ -0,0 +1,19 @@
+name: CI Build
+
+on:
+  pull_request:
+    branches: main
+
+jobs:
+  cibuild:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build with Docker
+        uses: docker/build-push-action@v2
+        with:
+          cache-from: type=registry,ref=ghcr.io/star-bnl/star-sw-build
+          push: false
+          tags: ghcr.io/star-bnl/star-sw-build
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 00000000000..79a9cc3bdae
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,101 @@
+FROM scientificlinux/sl:7 AS build-stage
+
+WORKDIR /workdir
+
+SHELL ["/bin/bash", "-c"]
+ENV LC_ALL=en_US.UTF-8
+
+# epel repo is for python pip only
+RUN yum update -q -y \
+ && yum install -y epel-release \
+ && yum install -y \
+    binutils gcc gcc-c++ gcc-gfortran xorg-x11-proto-devel \
+    git bzip2 unzip file which make imake patch \
+    bison byacc flex flex-devel libcurl-devel \
+    perl perl-Data-Dumper perl-Env perl-Digest-MD5 \
+    lapack-static blas-static \
+    libX11-devel libXext-devel libXpm-devel openmotif-devel \
+    python python-pip \
+ && yum clean all
+
+# Install extra python modules used by the STAR software
+RUN pip install pyparsing
+
+ADD https://api.github.com/repos/star-bnl/star-spack/commits/main star-spack-ref.json
+RUN git clone --recurse-submodules https://github.com/star-bnl/star-spack.git
+
+RUN source star-spack/setup.sh \
+ && spack env create mydocker star-spack/environments/star-x86_64-root534-docker.yaml \
+ && spack env activate mydocker \
+ && spack install -j 5 --fail-fast \
+ && spack gc -y
+
+# Install CERNLIB
+RUN mkdir /cern && cd /cern \
+ && curl -sL https://github.com/psilib/cernlib/archive/centos7.tar.gz | tar -xz --strip-components 1 \
+ && ./build_cernlib.sh \
+ && cd /cern/2006/lib \
+ && ln -s /usr/lib64/libblas.a libblas.a \
+ && ln -s /usr/lib64/liblapack.a liblapack3.a \
+ && cd /cern \
+ && ln -s 2006 pro \
+ && rm -fr /cern/2006/src /cern/2006/build /tmp/*
+
+ENV STAR=/star-sw
+ENV USE_64BITS=1
+ENV CERN=/cern
+ENV CERN_LEVEL=pro
+ENV CERN_ROOT=$CERN/$CERN_LEVEL
+ENV OPTSTAR=/opt/view
+ENV STAR_CVS_REF=YYY
+ENV STAR_HOST_SYS=sl88_gcc789
+ENV NODEBUG=yes
+ENV STAR_LIB=$STAR/.${STAR_HOST_SYS}/LIB
+ENV STAR_BIN=$STAR/.${STAR_HOST_SYS}/BIN
+ENV STAR_SCRIPTS=$STAR/scripts
+ENV STAR_CGI=$STAR/cgi
+ENV STAR_MGR=$STAR/mgr
+ENV STAR_PAMS=$STAR/pams
+ENV STAR_LEVEL=$STAR_CVS_REF
+ENV STAR_VERSION=$STAR_CVS_REF
+ENV STAR_SYS=x8664_sl7
+ENV PATH=$CERN_ROOT/bin:$STAR_BIN:$STAR_MGR:$PATH
+ENV LD_LIBRARY_PATH=$STAR_LIB:$LD_LIBRARY_PATH
+ENV LIBPATH+=":/lib64:/lib"
+
+# Dummy directories checked by cons
+RUN mkdir $OPTSTAR/lib && mkdir $OPTSTAR/include
+
+COPY . /star-sw
+
+# XXX TEMP XXX: Don't force mysql static libraries to be linked into root4star
+RUN cd /star-sw \
+ && cat > root4star_cons.patch <<<$'\
+diff --git a/asps/rexe/Conscript b/asps/rexe/Conscript \n\
+--- a/asps/rexe/Conscript \n\
++++ b/asps/rexe/Conscript \n\
+@@ -79,9 +79,7 @@ \n\
+ } \n\
+ $LIBS .= " -lgeant321 -lgcalor"; \n\
+ $LIBS  .= " " . $env->{CERNLIBS};\n\
+-$LIBS  .= $env->{LDALL};\n\
+ $LIBS  .= " " . $env->{Packages}->{MYSQL}->{LIBS};\n\
+-$LIBS  .= $env->{LDNONE};\n\
+ $LIBS  .= " " . $FLIBS . " " . $env->{CLIBS};#   " " . $env->{SYSLIBS} ;\n\
+ if ($STAR_SYS =~ /^sun4x_5.$/) {\n\
+     if ($LIBPATH) { $LIBPATH .= $main::PATH_SEPARATOR; }\n' \
+ && patch -p1 < root4star_cons.patch
+
+RUN source star-spack/setup.sh && spack env activate mydocker \
+ && export MYSQL=`spack location --install-dir mysql` \
+ && export LIBXML2_DIR=`spack location --install-dir libxml2` \
+ && cd /usr/include && ln -s $MYSQL/include mysql \
+ && cd /star-sw \
+ && cons +asps/staf \
+ && cons +asps/Simulation/agetof \
+ && cons +StarVMC/Geometry \
+ && cons %GeoTestMaker %Kinematics %OnlTools %StAngleCorrMaker %StDaqClfMaker \
+    %StEEmcPool %StEbye2ptMaker %StEbyePool %StEbyeScaTagsMaker %StFgtPool \
+    %StFtpcV0Maker %StHighptPool %StJetFinder %StRoot/Stv %StRoot/StvMaker \
+    %StRoot/StvSeed %StShadowMaker %StSpinMaker %StSpinPool %StStrangePool \
+    %pams/sim/g2r %StRoot/StHbtMaker